package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.Comparator;
import java.util.Map;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void add(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //拷贝属性
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //线程中获取创建人id
        //ThreadLocal<Map> threadLocal = new ThreadLocal<Map>();
        Long createUser = BaseContext.getCurrentId();

        employee.setCreateUser(createUser);
        employee.setUpdateUser(createUser);
        employeeMapper.add(employee);
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageResult pr = new PageResult();

        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> employeeList =(Page<Employee>) employeeMapper.pageQuery(employeePageQueryDTO.getName());
        pr.setTotal(employeeList.getTotal());
        pr.setRecords(employeeList);
        return pr;
    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

    @Override
    public Employee findById(Long id) {
        Employee employee = employeeMapper.findById(id);
        return employee;
    }

    @Override
    public void updateInfo(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

    @Override
    public void updatePassword(PasswordEditDTO passwordEditDTO) {
        Long id = BaseContext.getCurrentId();
        String oldPwd = passwordEditDTO.getOldPassword();
        String newPwd = passwordEditDTO.getNewPassword();
        Employee employee = employeeMapper.findById(id);

        if (employee == null) {
            //用户不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //旧密码错误或新旧密码不一致
        if(!(employee.getPassword().equals(DigestUtils.md5DigestAsHex(oldPwd.getBytes())))  ){

                throw new PasswordErrorException(MessageConstant.OLD_PWD_ERROR);
        }
        if(oldPwd.equals(newPwd)){
            throw new PasswordErrorException(MessageConstant.PASSWORD_VALIDATE_ERROR);
        }

        //创建一个存储新密码的对象
        Employee newEmp = new Employee();
        newEmp.setId(id);
        newEmp.setPassword(DigestUtils.md5DigestAsHex(newPwd.getBytes()));
        newEmp.setUpdateTime(LocalDateTime.now());
        newEmp.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(newEmp);


    }

}
